default closure compiler in a way that doesn't require EMSCRIPTEN_ROOT

settings.py

@@ -10,8 +10,6 @@ NODE_JS = 'node'
 SPIDERMONKEY_ENGINE = [os.path.expanduser('~/Dev/mozilla-central/js/src/js'), '-m', '-n']
 V8_ENGINE = os.path.expanduser('~/Dev/v8/d8')
 
-CLOSURE_COMPILER = os.path.join(EMSCRIPTEN_ROOT, 'third_party', 'closure-compiler', 'compiler.jar')
-
 TEMP_DIR = '/tmp'
 
 

tools/shared.py

@@ -139,6 +139,11 @@ except:
     print 'ERROR: %s does not seem to have JS_ENGINES or JS_ENGINE set up' % EM_CONFIG
     raise
 
+try:
+  CLOSURE_COMPILER
+except:
+  CLOSURE_COMPILER = path_from_root('third_party', 'closure-compiler', 'compiler.jar')
+
 # Additional compiler options
 
 try: